Published March 11, 2025 | Version v4
Dataset Open

Daily surface concentration of fire related PM2.5 for 2003-2024, modelled by SILAM CTM when using the MODIS satellite data for the fire radiative power

Creators

  • 1. Finnish Meteorological Institute

Contributors

Hosting institution:

Supervisor:

  • 1. Finnish Meteorological Institute

Description

Fine particles from wildfires are one important source for PM2.5. These small aerosol particles are risk to health and cause a large number of premature deaths world-wide. Using the MODIS satellite data we estimate the fine particulate matter emissions from wildfires and model they dispersion in atmosphere using the System for Integrated modeLling of Atmospheric coMposition (SILAM) chemistry transport model. The surface concentration of PM-fine, related to fires, is here evaluated for years 2003-2024 and the corresponding daily mean data is provided both in global scale, in 0.2 degree resolution, and also in European scale in 0.1 degree resolution. Additionally, the total global PM2.5-column from fires is provided at 0.5 degree resolution.

Methods

We use the fire radiative power data of MODIS instrument onboard of Aqua and Terra satellite to estimate globally the fire radiative power (FRP) from wildfires for years 2003-2024. The FRP is converted to fire related fine particles (PM2.5) using calibrated emissions factors and diurnal profile, together with dynamical emission heights. The dispersion of the fire related PM is followed by using System for Integrated modeLling of Atmospheric coMposition (SILAM) chemistry transport model version 5.8 (http://silam.fmi.fi, open-source code http://github.com/fmidev/silam-model). The global scale simulations have a resolution of 0.2x0.2 degrees with 29 model levels reaching up to 10.5 Pascals (~64 km). The lowest layer top is at ~31 m. The European scale grid has a horizontal resolution of 0.1x0.1 degrees and the boundaries come from the global results calculated at a resolution of 0.5x0.5 degrees, top boundary being at ~16 km. Total column is extracted from the global run performed at a resolution of 0.5 degrees. All simulations have time resolution of one hour from which the daily averaged surface concentration and the total column are extracted to the this data-set. Both the global and European scale simulations use the ERA5 meteorology as a drive.

Technical info

TechnicalInfo: The dataset consists of three subsets: 1) NetCDF file europePMfire01deg_2003to2024.nc4 contains the daily averaged fire related PM surface concentration in 0.1 degree resolution in European region, defined by lon = W25...E45, and lat = N30...N72. 2) NetCDF files globPMfire02deg_YEAR.nc4, where YEAR=2003,...,2024, contain the global daily averaged fire related PM surface concentration in 0.2 degree resolution. 3) NetCDF file globPMfireTotCol05deg_2003to2024.nc4 contains the global daily averaged total column of fire related PM in 0.5 degree resolution. Compared to the previous version of the dataset [Dated March 25, 2024 with DOI:10.57707/fmi-b2share.d1cac971b3224d438d5304e945e9f16c ] the current version of the dataset includes the data for the year 2024. End of 2023 is also re-calculated with final version of ERA5, compared with near-real-time version used in previous version of the dataset. The data is trimmed, such that the relative precision is 2 to 3 digits. The years 2003-2022 are also repacked.

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Additional details

Identifiers

b2rec
9bf837f1067342f38640e66c3acd41c6

Funding

European Union H2020
ClimAir 101156799
Research Council of Finland
VFSP-WASE 359421
European Union H2020
FirEUrisk 101003890

Instruments

System for Integrated modeLling of Atmopsheric coMposition SILAM
undefined (Other)

FMI metadata

Platforms
Model
System for Integrated modeLling of Atmopsheric coMposition SILAM
Parameter
  • Parameter name: Concentration of fire related PM (PM2.5)
  • Parameter unit: kg/m3
  • Parameter description: cnc_PM_FRP_m_17
  • Parameter name: Total column of fire related PM
  • Parameter unit: kg/m2
  • Parameter description: PM_FRP_m_17column
Data levels (meter, hectoPascal, degree, sigma pressure levels, other) in vertical direction(+/-) for example 1500 m or 850 hPa
  • Level: lowest model level (approximately from 0 to 31 m)
  • Level unit: other
Resolution
10
Topic category
environment

Temporal Coverage

Ranges:

Start date: 2002-12-31
End date: 2024-12-31

Locations

Global (0.2 x 0.2 degree resolution) Point:
(Lon: 0.0, Lat: 0.0 )

Global (0.2 x 0.2 degree resolution) Envelope:
(Lon: 89.0, Lat: -180.0 )
(Lon: -89.0, Lat: 180.0 )

European domain (0.1 x 0.1 degree resolution) Point:
(Lon: 0.0, Lat: 0.0 )

European domain (0.1 x 0.1 degree resolution) Envelope:
(Lon: 72.0, Lat: -25.0 )
(Lon: 30.0, Lat: 45.0 )

Global (0.5x 0.5 degree resolution) for the total column Envelope:
(Lon: 89.0, Lat: -180.0 )
(Lon: -89.0, Lat: 180.0 )